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R3881

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ID = 70325
       
Country:
France
Brand: Dario (tubes) - voir aussi La Radiotechnique
Tube type:  UNKNOWN 
Identical to R3881
First Source (s)
29.Oct.1929 : Le Journal

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Sidecontact.
Was used by Radio/TV-reception etc.
Filament
Information source - - Manufacturers Literature   La TSF Moderne, No. 115, 02/1930


Just Qvigstad
 
f_rt_lampes1929~~3.jpg

 

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